634277540 has 48 divisors (see below), whose sum is σ = 1447667760. Its totient is φ = 232035840.

The previous prime is 634277533. The next prime is 634277621. The reversal of 634277540 is 45772436.

634277540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 8076964 + 626200576 = 2842^2 + 25024^2 .

It is a junction number, because it is equal to n+sod(n) for n = 634277494 and 634277503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17150 + ... + 39530.

It is an arithmetic number, because the mean of its divisors is an integer number (30159745).

Almost surely, 2^634277540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634277540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (723833880).

634277540 is an abundant number, since it is smaller than the sum of its proper divisors (813390220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

634277540 is a wasteful number, since it uses less digits than its factorization.

634277540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22512 (or 22510 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 38.

The square root of 634277540 is about 25184.8672817627. The cubic root of 634277540 is about 859.1977104072.

The spelling of 634277540 in words is "six hundred thirty-four million, two hundred seventy-seven thousand, five hundred forty".